Bisecting dividers.



PATENTBD JAN. l?, 1905.

B.. JELSMA.

G'I'INGy DIVIDBRS.

` ATIOIT FILED AUG. 4, 1904.

ir Siins rriun.

PETER JELSMA, OF GUTHRIFJ, OKLAHOil/lA TFRRITORX.

lSECTlNGi Dllil'llDEHQIl SPECIFICATION forming part of Letters Patent No. 780,190, dated January 17, 1905.

Application filed August il, 1904. Serial No. 219,5/l3.

M TO CIJ/Z wwm 7313 'Hwy @U11/067W: l The leg Znaslieretotore desciibed,litsloosely 40 Beit known that l, PETER J sLsiiiA, a citizen l inthe sleeve c, and it is held up by means oi of the United States, residing at Guthrie, in a spring r/, which tits between the cap ,ff an( a the county oi' Logan and Territory oil Okla shoulder on the top olf the sleeve c. This hoina, iave invented new and use-ful lmprovespring keeps the point ot the leg l; oil the panients in Bisecting Dividers, oi which the iolper when the legs (t are spread. 45 lowing is a speciiication. The instrument can be used with one hand My invention relates to bisecting dividers holding it as usual tor suoli instruments ant having for its obgect a simple and accurate inspreading the legs desired, the inst linger strument of this kind; and it consists in cerbeing used tor pressing down the leg (t to tain novel eatures of construction hereinafter mark the center. 50 described and claimed. The instrument is simple in construction ln the accompanying drawings, Figure l is and not liable to get out of order and we an elevation of the invention, and Fig. Q a verserves the purpose for which it is intended. tical section thereof. Fig. 3 is a plan View. lNhat l claim as new, and desire to secure Fig. l is an elevation of the sleeve referred by Letters Patent, isW4 55 to hereinafter, and Fig. 5 is a vertical section l. A bisecting divider comprising telescopthereof. ing tubes, the inner tube having racks on op Referring specilically to the drawings, the posite sides', legs pivoted t0 the outer tube ain 2O divider has three legs, the outside legs being each havingl a toothed segment, said segments indicated at a and the center leg at t. The meshing with the racks resiiectively, and a 60 legs are pointed, as is usual in instruments of center leg extending loosely through the inner this hind. The leg is formed 0i' steel or tube and supported thereabove. other suitable metal rod and has at its upper 2. A bisecting divider comprising telescop- 2 5 end a cap j. rllie leg Z slides in a sleeve c, ing tubes, the inner tube having racks on opwhich sleeve has rack-teeth e cut on each side posite sides; legs pivoted to the outer tube and 65 0i' its outer surface. The sleeve o also teleeach having a toothed segment, said segments scopes or tits in an outer sleeve cl, which has meshing with the racks respectively; a center on each side outwardly-extending ears it, beleg extending loosely through the inner tube;

tween which the legs mare pivoted, as at vl. and a spring Ator holding,` :aid leg normally The said legs t are formed at their upper ends elevated. 7@ into a toothed segment f, which meshes with ln testimony wliereoiE .l have signed my naine the rack e on the sleeve c, the outer sleeve d to this specilication in the presence et two nnbbeing slotted, as at Zr, to allow the segment to scriliingl witnesses.

contact with the rack. lit will be apparent that when one ot the legs a is spread the other leg af will also be spreac the saine distance L and both legs will be equidistant troni the cenn Witnesses:

Vif. irl. tifunnocn,

ter leg Z. 1 J'. A. ltnnifiuiiii. 

